Use of stm8s003f3 UART

uart I'll sort it out here , Convenient for my subsequent use

bsp_uart1.h

#ifndef _BSP_UART1_H_
#define _BSP_UART1_H_


#include "stm8s.h"
#include "stm8s_clk.h"


void USART_Configuration(void);   // Serial port configuration function 
void UART_send_string(uint8_t *Buffer);// Send a string function 
#endif /* _BSP_UART_H_ */

bsp_uart1.c

void USART_Configuration(void)// Serial initialization function 
{  
    UART1_DeInit(); // Clear the previous serial port configuration 
    UART1_Init((u32)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, \
    UART1_PARITY_NO , UART1_SYNCMODE_CLOCK_DISABLE , UART1_MODE_TXRX_ENABLE);
    // Serial port configuration ： Baud rate 115200, Number of bytes 8,1 Stop bits , no parity , Asynchronous mode , Allow receiving and sending   
    UART1_ITConfig(UART1_IT_RXNE_OR, ENABLE);
    UART1_Cmd(ENABLE );  // Enable serial port 
}

void UART_send_string(uint8_t *Buffer) // Send a character 
{
    uint8_t *String;
    String=Buffer;
	  while(*String!='\0')
    {
        UART1_SendData8(*String);
        while (UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET);
		    String++;
    }
    UART1_SendData8(0x0d);
    while (UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET);
    UART1_SendData8(0x0a);
    while (UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET);
}

Interrupt processing function , The code is as follows , What is realized here is to send the received data , You can do it according to your actual situation

stm8_it.c

INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18)
{
    /* In order to detect unexpected events during development,
       it is recommended to set a breakpoint on the following instruction.
    */

    if(UART1_GetITStatus(UART1_IT_RXNE) != RESET)        // Check the specified UART1 Whether the interruption occurs . 
    {
        UART1_SendData8(UART1_ReceiveData8());             // Send the received data through serial port 
        UART1_ClearITPendingBit(UART1_IT_RXNE);            // eliminate UART1 Hang flag 
     }
}

Reference blog ：https://blog.csdn.net/qinrenzhi/article/details/80894508

Reference blog ：https://www.cnblogs.com/zhenghaoyu/p/10698471.html